1 // Copyright 2014 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6 // Original code is licensed as follows:
7 /*
8 * Copyright 2009 ZXing authors
9 *
10 * Licensed under the Apache License, Version 2.0 (the "License");
11 * you may not use this file except in compliance with the License.
12 * You may obtain a copy of the License at
13 *
14 * http://www.apache.org/licenses/LICENSE-2.0
15 *
16 * Unless required by applicable law or agreed to in writing, software
17 * distributed under the License is distributed on an "AS IS" BASIS,
18 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
19 * See the License for the specific language governing permissions and
20 * limitations under the License.
21 */
22
23 #include "barcode.h"
24 #include "BC_LuminanceSource.h"
25 #include "BC_BufferedImageLuminanceSource.h"
26 class CBC_Pause : public IFX_Pause {
27 public:
NeedToPauseNow()28 virtual FX_BOOL NeedToPauseNow() { return TRUE; }
29 };
CreateDIBSource(IFX_FileRead * fileread)30 static CFX_DIBitmap* CreateDIBSource(IFX_FileRead* fileread) {
31 CFX_DIBitmap* bitmap = NULL;
32 CCodec_ModuleMgr* pCodecMgr = NULL;
33 ICodec_ProgressiveDecoder* pImageCodec = NULL;
34 pCodecMgr = new CCodec_ModuleMgr();
35 pImageCodec = pCodecMgr->CreateProgressiveDecoder();
36 FXCODEC_STATUS status = FXCODEC_STATUS_DECODE_FINISH;
37 status = pImageCodec->LoadImageInfo(fileread, FXCODEC_IMAGE_UNKNOWN, nullptr);
38 if (status != FXCODEC_STATUS_FRAME_READY) {
39 return NULL;
40 }
41 bitmap = new CFX_DIBitmap;
42 bitmap->Create(pImageCodec->GetWidth(), pImageCodec->GetHeight(), FXDIB_Argb);
43 bitmap->Clear(FXARGB_MAKE(0xFF, 0xFF, 0xFF, 0xFF));
44 CBC_Pause pause;
45 int32_t frames;
46 status = pImageCodec->GetFrames(frames, &pause);
47 while (status == FXCODEC_STATUS_FRAME_TOBECONTINUE) {
48 status = pImageCodec->GetFrames(frames, &pause);
49 }
50 if (status != FXCODEC_STATUS_DECODE_READY) {
51 goto except;
52 }
53 status = pImageCodec->StartDecode(bitmap, 0, 0, bitmap->GetWidth(),
54 bitmap->GetHeight(), 0, FALSE);
55 if (status == FXCODEC_STATUS_ERR_PARAMS) {
56 goto except;
57 }
58 if (status != FXCODEC_STATUS_DECODE_TOBECONTINUE) {
59 goto except;
60 }
61 while (status == FXCODEC_STATUS_DECODE_TOBECONTINUE) {
62 status = pImageCodec->ContinueDecode(&pause);
63 }
64 if (status != FXCODEC_STATUS_DECODE_FINISH) {
65 goto except;
66 }
67 if (pImageCodec) {
68 delete pImageCodec;
69 pImageCodec = NULL;
70 }
71 delete pCodecMgr;
72 pCodecMgr = NULL;
73 return bitmap;
74 except:
75 if (pImageCodec) {
76 delete pImageCodec;
77 pImageCodec = NULL;
78 }
79 delete pCodecMgr;
80 pCodecMgr = NULL;
81 if (bitmap) {
82 delete bitmap;
83 }
84 return NULL;
85 }
CBC_BufferedImageLuminanceSource(const CFX_WideString & filename)86 CBC_BufferedImageLuminanceSource::CBC_BufferedImageLuminanceSource(
87 const CFX_WideString& filename)
88 : CBC_LuminanceSource(0, 0), m_filename(filename) {
89 m_height = 0;
90 m_width = 0;
91 m_bytesPerLine = 0;
92 m_top = 0;
93 m_left = 0;
94 }
Init(int32_t & e)95 void CBC_BufferedImageLuminanceSource::Init(int32_t& e) {
96 IFX_FileRead* fileread = FX_CreateFileRead(m_filename);
97 m_pBitmap = CreateDIBSource(fileread);
98 if (m_pBitmap == NULL) {
99 e = BCExceptionLoadFile;
100 return;
101 }
102 m_pBitmap->ConvertFormat(FXDIB_Argb);
103 m_height = m_pBitmap->GetHeight();
104 m_width = m_pBitmap->GetWidth();
105 m_rgbData.SetSize(m_height * m_width);
106 m_bytesPerLine = m_width * 4;
107 m_top = 0;
108 m_left = 0;
109 }
CBC_BufferedImageLuminanceSource(CFX_DIBitmap * pBitmap)110 CBC_BufferedImageLuminanceSource::CBC_BufferedImageLuminanceSource(
111 CFX_DIBitmap* pBitmap)
112 : CBC_LuminanceSource(0, 0) {
113 m_pBitmap = pBitmap->Clone();
114 m_pBitmap->ConvertFormat(FXDIB_Argb);
115 m_height = m_pBitmap->GetHeight();
116 m_width = m_pBitmap->GetWidth();
117 m_rgbData.SetSize(m_height * m_width);
118 m_bytesPerLine = m_width * 4;
119 m_top = 0;
120 m_left = 0;
121 }
~CBC_BufferedImageLuminanceSource()122 CBC_BufferedImageLuminanceSource::~CBC_BufferedImageLuminanceSource() {
123 delete m_pBitmap;
124 m_pBitmap = NULL;
125 }
GetRow(int32_t y,CFX_ByteArray & row,int32_t & e)126 CFX_ByteArray* CBC_BufferedImageLuminanceSource::GetRow(int32_t y,
127 CFX_ByteArray& row,
128 int32_t& e) {
129 if (y < 0 || y >= m_height) {
130 e = BCExceptionRequestedRowIsOutSizeTheImage;
131 return NULL;
132 }
133 int32_t width = m_width;
134 if (row.GetSize() == 0 || row.GetSize() < width) {
135 row.SetSize(width);
136 }
137 if (m_rgbData.GetSize() == 0 || m_rgbData.GetSize() < width) {
138 m_rgbData.SetSize(width);
139 }
140 int32_t* rowLine = (int32_t*)m_pBitmap->GetScanline(y);
141 int32_t x;
142 for (x = 0; x < width; x++) {
143 int32_t pixel = rowLine[x];
144 int32_t luminance = (306 * ((pixel >> 16) & 0xFF) +
145 601 * ((pixel >> 8) & 0xFF) + 117 * (pixel & 0xFF)) >>
146 10;
147 row[x] = (uint8_t)luminance;
148 }
149 return &row;
150 }
GetMatrix()151 CFX_ByteArray* CBC_BufferedImageLuminanceSource::GetMatrix() {
152 CFX_ByteArray* matirx = new CFX_ByteArray();
153 matirx->SetSize(m_bytesPerLine * m_height);
154 int32_t* rgb = (int32_t*)m_pBitmap->GetBuffer();
155 int32_t y;
156 for (y = 0; y < m_height; y++) {
157 int32_t offset = y * m_width;
158 int32_t x;
159 for (x = 0; x < m_width; x++) {
160 int32_t pixel = rgb[offset + x];
161 int32_t luminance =
162 (306 * ((pixel >> 16) & 0xFF) + 601 * ((pixel >> 8) & 0xFF) +
163 117 * (pixel & 0xFF)) >>
164 10;
165 (*matirx)[offset + x] = (uint8_t)luminance;
166 }
167 }
168 return matirx;
169 }
170